MolluscaBase taxon details
original description
(of Helix (Eucampylaea) matrella Westerlund, 1898) Westerlund, C. A. (1898). Novum specilegium malacologicum. Neue Binnenconchylien aus der paläarktischen Region. <em>Annuaire du Musée Zoologique de l'Académie Impériale des Sciences de St.-Pétersbourg.</em> 3 (2): 155-183. St.-Petersburg [December]., available online at https://www.biodiversitylibrary.org/page/8651422 [details]
additional source
Subai, P. (1996). Revision der Ariantinae. 1. Die Helicigona-Untergattung Thiessea (Gastropoda: Pulmonata: Helicidae). Archiv für Molluskenkunde, 126 (1/2): 1-49. Frankfurt am Main [30 December].
page(s): 23, Taf. 2 Fig. 11; Abb. 14a-c [details] Available for editors [request]